How Google Calendar's family sharing works, and where it runs out

What is Google’s family calendar, exactly?

It’s a calendar named “Family” that Google creates automatically the moment a family group is set up, according to Google’s own support page on family calendars. Every member of that family group can find it in their own Google Calendar on any device where they’re signed in, without being separately invited to it the way a personal calendar would need to be shared. It isn’t a separate app or a paid feature. It comes with the free family group Google already offers.

How many people can join, and who can edit what?

Up to six people can join, and editing is open by default instead of being locked to the person who set it up. Google’s family-group documentation confirms a family manager can invite up to five other people, six including themselves. Ownership of the Family calendar starts with whoever created it but can be transferred, and per Google’s family calendar support page, non-family members invited to the calendar get edit access by default, the same as a secondary calendar. There’s also an age rule: Google notes that when a member under 13 shares the Family calendar, makes it public or changes member permissions, everyone with “Make changes and manage sharing” permission gets an email about it.

How do you share your own calendar instead of the whole family group’s?

That uses a separate mechanism: you add specific people to your own personal calendar and choose a permission level per person. Google’s calendar-sharing support page documents five levels, from someone only seeing when you’re busy to someone able to manage sharing on your behalf.

Permission level	What the other person can do
See only free/busy	Sees when you’re busy, no event details
See all event details	Sees titles, times, locations and descriptions
Make changes (private events stay hidden)	Can edit events; private ones still show as busy only
Make changes and see event details	Can edit and see full details, including who else has access
Make changes and manage sharing	Full control, including sharing the calendar with others

Use this when only one or two people need access to one calendar, and not everyone in a family group needs the same shared one.

What if the household is bigger than six people, or blended across two homes?

The family group can’t grow past six, but the calendar-sharing tool above gives you a workaround. Six is a hard limit on a Google family group, per Google’s family-group support page, so a step-parent, a grandparent living in the house, or a co-parent in a second household who isn’t part of the family group can’t simply be added to it. Instead, the family manager, or whoever owns the Family calendar after a transfer, shares it individually with that extra person using “make changes” access, which sits outside the six-member family-group cap. It’s an extra manual step that doesn’t happen automatically the way it does for the six core members, and it has to be repeated for every person outside the group.

Where does Google Calendar’s family sharing run out?

It runs out at everything that isn’t already a typed-in calendar event. The Family calendar is a proper shared calendar, as Google’s own documentation above shows, but it can’t read a photographed school flyer or a scanned PDF term calendar and turn it into events, so every date still has to be typed in by a person. It has no chores, rewards or shared grocery list built around the same household, since those are entirely separate Google products, if they exist as a Google product at all. And syncing it with a household member’s Outlook calendar isn’t real two-way sync: per Microsoft’s own support documentation and Google’s community guidance, the standard method is subscribing to an ICS link, which is read-only in the receiving app. An event added in Outlook doesn’t flow back to Google, and vice versa, so a two-parent household split across Google and Outlook is still keeping two calendars that don’t sync both ways.

How do you layer Plannie on top without giving up Google Calendar?

You connect the Google account instead of replacing it, under Settings → Family & access → a member → Sync & calendars → Connect a calendar. From then on, sync runs two-way: an event added in Plannie appears in Google Calendar, and an event added in Google Calendar on the phone, out of old habit, appears in Plannie too. Neither side is treated as the read-only copy. A second parent on Outlook connects their own account the same way, and both accounts sync independently into the one shared, colour-coded view. That is the gap a household mixing Google and Outlook runs into with Google’s own tools. What Google’s Family calendar doesn’t do (chores and rewards, a shared grocery list, photo and PDF import, a kiosk-mode wall display) sits on top of the same synced calendar, so there’s no need for a second, disconnected app.

Full sync setup is covered in the shared calendar guide, and how a school’s own PDF or emailed calendar gets in alongside it is covered in the school calendar guide. See the shared family calendar page for the feature itself.